Results 11 to 20 of about 1,349,018 (307)

Detailed modeling of the kraft pulping chemistry: carbohydrate reactions [PDF]

AIChE Journal, 2020
AbstractThe article introduces a detailed model for carbohydrate chemistry in kraft pulping. This article is continuation to the modeling work carried out for hot water extraction and chemical pulp bleaching. The model includes galactoglucomannan, xylan, and cellulose acid–base equilibria, in addition to peeling, stopping, and alkaline hydrolysis ...
Fearon, Olesya, Nykänen, Vesa, Kuitunen, Susanna, Ruuttunen, Kyösti, Alén, Raimo, Alopaeus, Ville, Vuorinen, Tapani   +7 more
openaire   +4 more sources

Detailed Chemistry Studies of 225Actinium Labeled Radiopharmaceuticals

Current Radiopharmaceuticals, 2022
Background: The synthesis of 225Actinium derivatives was afforded by using PSMA- 617, DOTATATE peptides, and EDTMP ligand. Detailed experiments, quality control (QC), and stability studies were also well described. The radiolabelling reactions were performed in mild conditions with desirable radiochemical yields and high radiochemical purities ...
Eryilmaz, Kurtulus, Kilbas, Benan
openaire   +3 more sources

Detailed Modeling of Kraft Pulping Chemistry. Delignification [PDF]

Industrial & Engineering Chemistry Research, 2020
This work introduces a phenomena-based model for delignification in the kraft pulping process. The solubilization of lignin is described as a set of chemical reactions representing the entire chemistry of lignin degradation as well as dissolution of the degraded lignin.
Kuitunen, Susanna, Ruuttunen, Kyösti, Alopaeus, Ville, Vuorinen, Tapani, Fearon, Olesya   +5 more
openaire   +3 more sources

Detailed Emotional Profile of Secondary Education Students Toward Learning Physics and Chemistry

Frontiers in Psychology, 2021
The present research arises from the need to identify the emotions that K-7 to K-10 students experience toward the learning of Physics and Chemistry, since it is a fact that there is a decrease in the number of students choosing itineraries related to ...
María Antonia Dávila-Acedo, Diego Airado-Rodríguez, Florentina Cañada-Cañada, Jesús Sánchez-Martín   +3 more
doaj   +1 more source

Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO₂ in CESM2 [PDF]

Atmospheric Chemistry and Physics, 2021
Sulfur dioxide (SO2) is a major atmospheric pollutant and precursor of sulfate aerosols, which influences air quality, cloud microphysics, and climate. Therefore, better understanding the conversion of SO2 to sulfate is essential to simulate and predict ...
W. Ge, J. Liu, K. Yi, J. Xu, Y. Zhang, X. Hu, J. Ma, X. Wang, Y. Wan, J. Hu, Z. Zhang, X. Wang, S. Tao   +12 more
doaj   +1 more source

Swirling Combustor Energy Converter: H2/Air Simulations of Separated Chambers

Energies, 2015
This work reports results related to the “EU-FP7-HRC-Power” project aiming at developing micro-meso hybrid sources of power. One of the goals of the project is to achieve surface temperatures up to more than 1000 K, with a ∆T ≤ 100 K, in order to be ...
Angelo Minotti, Paolo Teofilatto
doaj   +1 more source

Real-Time Emission Prediction with Detailed Chemistry under Transient Conditions for Hardware-in-the-Loop Simulations

Energies, 2021
The increasing requirements to further reduce pollutant emissions, particularly with regard to the upcoming Euro 7 (EU7) legislation, cause further technical and economic challenges for the development of internal combustion engines.
Mario Picerno, Sung-Yong Lee, Michal Pasternak, Reddy Siddareddy, Tim Franken, Fabian Mauss, Jakob Andert   +6 more
doaj   +1 more source

Hybrid energy converter based on swirling combustion chambers: the hydrocarbon feeding analysis

AIMS Energy, 2017
This manuscript reports the latest investigations about a miniaturized hybrid energy power source, compatible with thermal/electrical conversion, by a thermo-photovoltaic cell, and potentially useful for civil and space applications.
Angelo Minotti
doaj   +1 more source

Large eddy simulations of methane oxidation at ultra-wet conditions in a model gas turbine combustor applying detailed chemistry

Journal of Fluid Science and Technology, 2014
The addition of steam to the combustion process is a promising avenue, in order to reduce harmful emissions and simultaneously increase the efficiency. In contrast to traditional flames where the heat release exhibits a thin flame front, operating under ...
Oliver KRÜGER, Christophe DUWIG, Steffen TERHAAR, Christian Oliver PASCHEREIT   +3 more
doaj   +1 more source

The Polytropic Equation of State of Interstellar Gas Clouds [PDF]

, 2000
Models are presented for the polytropic equation of state of self-gravitating, quiescent interstellar gas clouds. A detailed analysis, including chemistry, thermal balance, and radiative transfer, is performed for the physical state of the gas as a ...
de Jong T., Falgarone E., Joseph Silk, Kegel W. H., Larson R. B., Marco Spaans, Spaans M., Spaans M., Spaans M.   +8 more
core   +2 more sources